J'ai configuré Logitech c920. Avec l'aide d'un utilisateur expérimenté de Ask Ubuntu, j'ai installé GUVCview, le panneau de configuration Linux Video4 et le testeur d'utilitaires QT V4L2 ici. Je peux passer de la webcam intégrée de mon Toshiba à ma webcam externe à l'aide de GUVCview.
Cependant, lorsque je démarre un chat vidéo sur Google Hangouts, il sélectionne automatiquement la caméra intégrée de mon ordinateur portable par défaut. Je voudrais modifier mes paramètres par défaut pour toujours utiliser une caméra externe, mais je ne trouve pas où se trouve cette option.
J'utilise Windows 7 et Ubuntu 12.04 LTS sur Toshiba Satellite L755
- mémoire :3,8 Gib
- processeur :processeur Intel® Core™ i5-2410M à 2,30 GHz × 4
- cartes graphiques :Intel® Sandybridge Mobile
- Type d'OS 64 bits
- disque :40,2 Go
EDIT :j'ai essayé Gstreamer-properties dans le terminal et modification de l'entrée par défaut sous vidéo en caméra externe Logitech. Toujours pas de chance. Lorsque je "teste", je n'obtiens aucune image et j'obtiens toujours une caméra pour ordinateur portable lorsque j'ouvre GUVC.
2ème EDIT :Après avoir installé le sélecteur multimédia dans le terminal, je n'étais toujours pas en mesure de le trouver dans Dash. Voici la lecture après l'exécution de la commande :
Reading package lists... Done
Building dependency tree
Reading state information... Done
gconf-service is already the newest version.
gconf-service set to manually installed.
gconf2 is already the newest version.
gconf2 set to manually installed.
libatk1.0-0 is already the newest version.
libatk1.0-0 set to manually installed.
libgconf-2-4 is already the newest version.
libgconf-2-4 set to manually installed.
libgnome-media-profiles-3.0-0 is already the newest version.
libgnome-media-profiles-3.0-0 set to manually installed.
libgstreamer0.10-0 is already the newest version.
libgstreamer0.10-0 set to manually installed.
dpkg is already the newest version.
gnome-media is already the newest version.
gstreamer0.10-gconf is already the newest version.
gstreamer0.10-gconf set to manually installed.
gstreamer0.10-plugins-base is already the newest version.
gstreamer0.10-plugins-base set to manually installed.
gstreamer0.10-plugins-good is already the newest version.
gstreamer0.10-plugins-good set to manually installed.
libc6 is already the newest version.
libglib2.0-0 is already the newest version.
libgstreamer-plugins-base0.10-0 is already the newest version.
libgstreamer-plugins-base0.10-0 set to manually installed.
libgtk-3-0 is already the newest version.
libgtk-3-0 set to manually installed.
x11-utils is already the newest version.
x11-utils set to manually installed.
The following packages were automatically installed and are no longer required:
gir1.2-ubuntuoneui-3.0 linux-headers-3.2.0-54 libubuntuoneui-3.0-1
thunderbird-globalmenu linux-headers-3.2.0-54-generic
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Si j'exécute Gstreamer-properties dans le terminal, je reçois le sélecteur multimédia. Je change l'entrée par défaut en externe, le voyant bleu de la caméra externe s'allume (lorsque j'appuie sur "test"), mais pas d'image.
Voici une capture d'écran des paramètres
3ème EDIT :
Après l'avoir exécuté en tant que root avec sudo gstreamer-properties J'ai changé l'entrée par défaut en webcam HD (mêmes paramètres que la capture d'écran précédente) et quand j'ouvre GUVC, il s'ouvre en tant que caméra d'ordinateur portable. Voici ce qu'était la lecture après avoir exécuté SUDO
(gstreamer-properties:15236): Gtk-WARNING **: Unknown property: GtkDialog.has-separator
(gstreamer-properties:15236): Gtk-WARNING **: Unknown property: GtkDialog.has-separator
gstreamer-properties-Message: Skipping unavailable plugin 'artsdsink'
gstreamer-properties-Message: Skipping unavailable plugin 'esdsink'
gstreamer-properties-Message: Skipping unavailable plugin 'sunaudiosink'
gstreamer-properties-Message: Skipping unavailable plugin 'glimagesink'
gstreamer-properties-Message: Skipping unavailable plugin 'sdlvideosink'
gstreamer-properties-Message: Skipping unavailable plugin 'v4lmjpegsrc'
gstreamer-properties-Message: Skipping unavailable plugin 'qcamsrc'
gstreamer-properties-Message: Skipping unavailable plugin 'v4lsrc'
gstreamer-properties-Message: Skipping unavailable plugin 'esdmon'
gstreamer-properties-Message: Skipping unavailable plugin 'sunaudiosrc'
Lorsque j'ai essayé de fermer le terminal, le processus était toujours utilisé.
4ÈME ÉDITION, le jour suivant :
J'ai suivi le lien ci-dessous vers Dumindu's
sudo apt-get install gstreamer-dbus-media-service gstreamer-tools gstreamer0.10-alsa gstreamer0.10-buzztard gstreamer0.10-buzztard-doc gstreamer0.10-crystalhd gstreamer0.10-doc gstreamer0.10-ffmpeg gstreamer0.10-ffmpeg-dbg gstreamer0.10-fluendo-mp3 gstreamer0.10-gconf gstreamer0.10-gnomevfs gstreamer0.10-gnonlin gstreamer0.10-gnonlin-dbg gstreamer0.10-gnonlin-doc gstreamer0.10-hplugins gstreamer0.10-nice gstreamer0.10-packagekit gstreamer0.10-plugins-bad gstreamer0.10-plugins-bad-doc gstreamer0.10-plugins-bad-multiverse gstreamer0.10-plugins-base gstreamer0.10-plugins-base-apps gstreamer0.10-plugins-base-dbg gstreamer0.10-plugins-base-doc gstreamer0.10-plugins-cutter gstreamer0.10-plugins-good gstreamer0.10-plugins-good-doc gstreamer0.10-plugins-ugly gstreamer0.10-plugins-ugly-doc gstreamer0.10-pocketsphinx gstreamer0.10-pulseaudio gstreamer0.10-qapt gstreamer0.10-sdl gstreamer0.10-tools gstreamer0.10-vaapi gstreamer0.10-vaapi-doc gstreamer0.10-x
et l'a exécuté via le terminal. Après quelques minutes, le script était terminé et je n'ai remarqué aucun échec ou erreur. Cependant, lorsque j'ai ensuite exécuté sudo gstreamer-properties J'ai reçu les mêmes messages "Ignorer le plugin non disponible" que ci-dessus ^. L'entrée par défaut du sélecteur de systèmes multimédia est définie sur c920 HD cam, mais je viens d'ouvrir GUVC et il ouvre la caméra de l'ordinateur portable. Voici la lecture après sudo apt get install …. TROP DE PERSONNAGES, impossible de poster. Voici la moitié :
ad-multiverse_0.10.21-1_amd64.deb) ...
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Je voulais juste revérifier dans Ubuntu Software Center pour m'assurer que Gstreamer était installé, et il montre tout ce qui est installé 
[email protected]:~$ lsusb
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 04f2:b289 Chicony Electronics Co., Ltd
Bus 002 Device 003: ID 046d:082d Logitech, Inc.
[email protected]:~$ lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
|__ Port 1: Dev 2, If 0, Class=hub, Driver=hub/6p, 480M
|__ Port 2: Dev 3, If 0, Class='bInterfaceClass 0x0e not yet handled', Driver=uvcvideo, 480M
|__ Port 2: Dev 3, If 1, Class='bInterfaceClass 0x0e not yet handled', Driver=uvcvideo, 480M
|__ Port 2: Dev 3, If 2, Class=audio, Driver=snd-usb-audio, 480M
|__ Port 2: Dev 3, If 3, Class=audio, Driver=snd-usb-audio, 480M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
|__ Port 1: Dev 2, If 0, Class=hub, Driver=hub/6p, 480M
|__ Port 4: Dev 3, If 0, Class='bInterfaceClass 0x0e not yet handled', Driver=uvcvideo, 480M
|__ Port 4: Dev 3, If 1, Class='bInterfaceClass 0x0e not yet handled', Driver=uvcvideo, 480M
Eh bien, ce genre de morts dans l'eau. Je ne sais pas si je dois poster un autre sujet ou quoi. J'essaie simplement de faire de ma webcam externe ma webcam par défaut. J'ai installé Gstreamer (photo) J'ai installé un sélecteur de systèmes multimédia. J'ai des paramètres par défaut dans le sélecteur de systèmes multimédia à définir sur la webcam c920, et pourtant, lorsque j'ouvre le chat vidéo ou GUVC, il ouvre la caméra de l'ordinateur portable.
J'ai obtenu de l'aide à ce sujet et j'ai suivi. Mais je n'arrive toujours pas à le faire fonctionner. Quelqu'un a-t-il une idée ou dois-je poster ailleurs ? Merci
Réponse acceptée :
D'après la réponse de @hopeithelps, il semble que les programmes prennent /dev/video0 comme webcam par défaut. Sur mon système, /dev/video0 est initialement la caméra intégrée, tandis que /dev/video1 apparaît/disparaît automatiquement lorsque la webcam externe est attachée/détachée.
Alors je viens d'écrire une commande simple pour que /dev/video0 pointe vers la "meilleure caméra disponible" - la webcam si elle est présente, et la caméra intégrée sinon. À l'heure actuelle, je dois invoquer ce script manuellement après avoir branché/débranché la webcam. Cependant, le microphone passe automatiquement au "meilleur microphone" car j'ai suivi cette réponse askUbuntu.
Rant :Ubuntu ne devrait-il pas avoir une approche unifiée du branchement à chaud de l'écran, de la caméra, du haut-parleur, du microphone (et aussi du clavier, de la souris, du MIDI, … ?). Toutes ces choses semblent nécessiter un bricolage séparé. Je pense que gnome-display-manager a la conception idéale :il se souvient de mes anciens paramètres lorsque je branche un écran que j'ai utilisé auparavant.
Voici le script :
#!/bin/bash
# Make default camera /dev/video0 point to the "best" camera present.
if [ -h /dev/video0 ]; then
sudo rm /dev/video0 # not first run: remove our old symlink
elif [ -e /dev/video0 ]; then
sudo mv /dev/video0 /dev/video0.original # first run: rename original video0
fi
if [ -e /dev/video1 ]; then
sudo ln -s /dev/video1 /dev/video0 # symlink to video1 since it exists
echo "Set default camera /dev/video0 --> external camera /dev/video1"
elif [ -e /dev/video0.original ]; then # symlink to video0.original otherwise
sudo ln -s /dev/video0.original /dev/video0
echo "Set default camera /dev/video0 --> integrated camera /dev/video0.original"
else
echo "Sorry, does this machine have no camera devices?"
ls -l /dev/video*
fi
Testé avec guvcview et Google Hangouts, en utilisant deux webcams Logitech différentes. J'utilise Ubuntu 13.10 (en fait Mint Petra) sur un Thinkpad T530i.
Connexe :Mise à niveau de 10.04 à 11.04 ?Vous devrez peut-être modifier le script si votre webcam apparaît comme /dev/video3 ou quelque chose, comme c'est le cas pour @hopeithelps. (Peut-être aurais-je dû lui faire choisir le périphérique /dev/video* qui a l'horodatage le plus récent…)